Spinach Casserole - cooking recipe

Ingredients

2 boxes frozen spinach
1/4 c. chopped onion (fine)
dash of salt
1 egg, beaten
1/4 c. milk
1/2 c. shredded American cheese, Monterey Jack or combination of the two
1/2 pkg. crushed saltines
1/2 stick butter or margarine
1 small can mushrooms

Preparation

Defrost and prepare spinach.
Drain.
Add remaining ingredients.
Reserve a few crushed saltines.
Pour mixture into baking dish or casserole dish.
Bake at 350\u00b0 for 45 minutes.